| Month | Temp. (min) | Temp. (max) | Temp. (avg) | Precipitation |
| January | 22°F | 35°F | 28°F | 3.8" |
| February | 16°F | 30°F | 23°F | 1.6" |
| March | 28°F | 47°F | 36°F | 3.5" |
| April | 38°F | 60°F | 48°F | 6.2" |
| May | 49°F | 72°F | 60°F | 2.5" |
| June | 61°F | 84°F | 72°F | 4.9" |
| July | 63°F | 84°F | 73°F | 7.4" |
| August | 64°F | 84°F | 73°F | 8.9" |
| September | 56°F | 80°F | 67°F | 4.4" |
| October | 48°F | 67°F | 57°F | 2.8" |
| November | 33°F | 51°F | 42°F | 4.5" |
| December | 22°F | 34°F | 28°F | 4.2" |
| Index | Harbor View | Ohio | National |
| Air quality index | 40 | 40 | 42 |
| Pollution index | 13,229,000 | 4,472,386 | 2,726,193 |
| Measurement | Total |
| Days measured | 365 |
| Days with good air quality | 291 |
| Days with moderate air quality | 73 |
| Days w/ poor A.Q. for sensitive groups | 1 |
| Days with unhealthy air quality | 0 |
| Pollutant | Total |
| Arsenic | 0.150% |
| Benzene | 0.070% |
| Carbon Tetrachloride | 0.020% |
| Lead | 0.070% |
| Mercury | 0.220% |
| City | Population | Air Quality Index | National Avg. |
| South Monroe, MI | 6,194 | 1 | 98.0% |
| Luna Pier, MI | 1,134 | 1 | 98.0% |
| Petersburg, MI | 1,178 | 1 | 98.0% |
| Genoa, OH | 2,082 | 40 | 20.0% |
| Stony Ridge, OH | 601 | 40 | 20.0% |
| Harbor View, OH | 156 | 40 | 20.0% |
| City | Population | Air Quality Index | National Avg. |
| Winthrop, AR | 156 | 39 | 22.0% |
| Kirkwood, CA | 156 | 13 | 74.0% |
| Philo, CA | 156 | 33 | 34.0% |
| Rowan, IA | 156 | 15 | 70.0% |
| Kirwin, KS | 156 | 19 | 62.0% |
| Harbor View, OH | 156 | 40 | 20.0% |
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